So far I've only used the William Marvy soap (that comes with Tony's kits) and Prorarso. As of yet, no cremes.

The WM does an alright job. Seems to be able to produce a good fluffy lather, but half the time ends up a little to much on this thin side. Lubrication while shaving is again, alright. Basically I have no complaints, but nothing fantastic to say about soap either.

The Proraso I really like. It's a softer soap but I always can get a really nice lather out of it. Goes on well, lubricates nicely and stays moist long enough that I can really take my time. It also has menthol in it so I get that nice evaporative cooling effect. I kinda like the smell too, a little but minty, similar to vicks vaporub.

I also have a cake of the Williams shave soap that I haven't tried yet.